RFID Transponder Write Control via Data Collation
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Solution Overview
Problem
Conventional radio communication apparatuses for RFID transponders have low process efficiency due to frequent writing errors when data is written to moving transponders, requiring repeated data writing processes and detection steps.
Innovation Solution
A radio communication apparatus that reads the transponder's data, collates it with the data to be written, and only writes the data if it is different, skipping the writing process if the data is identical, thereby reducing unnecessary writing attempts and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is written repeatedly to moving transponders, then data can be stored in the transponder, but writing errors occur frequently due to changing distance between antenna and transponder
Solution Approach 1:
The system performs a read operation before the write operation to obtain the current data in the transponder. This preliminary action allows the system to compare the existing data with the target data and determine whether writing is necessary, thereby avoiding unnecessary write operations that could cause errors due to movement during writing.
Solution Approach 2:
The system uses the read data as feedback to decide whether to perform the write operation. By comparing the read data with the target data, the system can determine if the data needs to be updated, thus preventing redundant write operations that would reduce productivity without improving reliability.
2Reliability
If data writing is performed multiple times to ensure successful storage, then data can be reliably stored, but the process time increases significantly
Solution Approach 1:
The read operation is performed as a preliminary step before writing. This allows the system to check the current data state and only proceed with writing if necessary, thereby reducing the total number of write operations required and minimizing the time lost to redundant writing attempts.
Solution Approach 2:
Instead of always performing full write operations, the system performs a partial action (read-then-write only if different) that is sufficient to ensure data reliability while avoiding excessive writing time. The read operation provides just enough information to make an informed decision about whether writing is needed.
3Reliability
If the system always performs data writing to ensure data is stored, then data can be reliably written, but unnecessary writing operations reduce process efficiency
Solution Approach 1:
The system uses feedback from the read operation to control whether the write operation should be executed. By comparing the read data with the target data, the system can determine if writing is necessary, thus ensuring data reliability only when needed while maintaining high productivity by avoiding unnecessary write operations.
Solution Approach 2:
The system serves itself by using the read data to determine whether writing is needed. This self-service mechanism eliminates the need for always performing writes, allowing the system to maintain reliability while improving productivity through intelligent decision-making based on the actual data state.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces writing errors and increases the speed of the data-writing process, allowing for high-efficiency data writing even when transponders are moving relative to the antenna, by effectively utilizing the necessary ID-reading step without adding extra reading steps.
Implementation Method 1
The antenna emits and picks up radio signals to and from the transponders
Data Source
AI summary
Upon receiving a command for writing data to a transponder, a reading unit performs radio communication with the transponder to which data should be written, thereby reading, in non-contact fashion, a data item stored in the transponder. A collating unit collates the data read by the reading unit with a data item to be written to the transponder. A control unit performs radio communication with the transponder, thereby writing the data item to the transponder, when the data items are not identical, and skips the writing of the data item when the data items are identical.